Cup lid



FIG. 1 is a perspective view of the drink-thru cup lid showing our new design;

FIG. 2 is a side elevational view of the drink-thru cup lid of FIG. 1;

FIG. 3 is a top plan view of the drink-thru cup lid of FIG. 1; and,

FIG. 4 is a bottom plan view of the drink-thru cup lid of FIG. 1. 

The ornamental design for a cup lid, as shown and described. 